San Francisco uses a lottery for every grade, beginning with pre-K. This causes intense anxiety among many parents. But San Francisco doesn't struggle with the same problems as Baltimore, certainly not to the same degree. In the case of elementary school, other than the chance of not getting the closest school, the anxiety is largely unwarranted, IMO. I'm not looking forward to junior or, especially, high school, though. Unless we end up going the Catholic school route, which is surprisingly cheap--significantly cheaper than daycare.
Anecdote: A parent from our kid's preschool once told me they had a conversation with the principal of one of our neighborhood elementary schools and upon inquiring about the relatively early start time the principal told him, or at least insinuated, that the start time was designed to dissuade cross-town parents from selecting the school, effectively gaming the lottery system to favor neighborhood families.